TechQA.

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After `x = x.y()`, why did `x` become `None` instead of being modified (possibly causing "AttributeError: 'NoneType' object has no attribute")?

score 610 · Answer 1 · 2023-03-27T00:18:30.593000

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610

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After `x = x.y()`, why did `x` become `None` instead of being modified (possibly causing "AttributeError: 'NoneType' object has no attribute")?

610 views Asked by Karl Knechtel At 27 March 2023 at 00:18

score 2125 · Answer 2 · 2022-02-19T10:07:28.357000

Is there any rule in CQRS which doesn't allow to use a query and a command in the same controller action?

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score 499 · Answer 3 · 2021-08-11T15:38:20.937000

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score 1060 · Answer 4 · 2021-08-06T17:13:43.850000

Vertical Slice Architecture - What should go in the Controller, Command/Query, Response, CommandHandler?

1k views Asked by Vahe At 06 August 2021 at 17:13

score 162 · Answer 5 · 2020-10-30T21:28:55.030000

In CQ(R)S, is it OK to use a Command as a parameter of a model constructor?

162 views Asked by BenMorel At 30 October 2020 at 21:28

score 745 · Answer 6 · 2019-12-12T05:53:43.570000

CQRS and unit of work - one command for all the changes, or many commands + a save command?

745 views Asked by ca9163d9 At 12 December 2019 at 05:53

score 1172 · Answer 7 · 2019-12-05T11:21:36.577000

How to update read model in CQRS pattern on schema change of write model database?

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score 1820 · Answer 8 · 2019-12-04T18:53:16.390000

How to generate read data in CQRS from existing write database?

1.8k views Asked by kailashdesiti At 04 December 2019 at 18:53

score 83 · Answer 9 · 2019-06-26T23:57:11.777000

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83 views Asked by JTech At 26 June 2019 at 23:57

score 202 · Answer 10 · 2019-01-03T02:20:48.010000

What are the recomendation for developing .net core 2.2 web api for following bulleted points?

202 views Asked by MSR At 03 January 2019 at 02:20

score 2131 · Answer 11 · 2018-08-21T18:34:43.620000

Implementation of Event-Sourcing / CQRS approach in api-platform

2.1k views Asked by Yury Garris At 21 August 2018 at 18:34

score 1051 · Answer 12 · 2017-03-04T15:23:40.290000

Single function classes (named as verbs)

1k views Asked by svejk At 04 March 2017 at 15:23

score 1302 · Answer 13 · 2016-12-12T09:03:18.920000

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1.3k views Asked by CraigM At 12 December 2016 at 09:03

score 41 · Answer 14 · 2016-11-06T17:09:15.040000

Can not implicity convert type Systems.Collection.Generic.List<feedEventViewModel> to Proj.Areas.Management.Models.FeedEventViewModel

41 views Asked by Alex At 06 November 2016 at 17:09

score 28 · Answer 15 · 2016-09-19T19:46:34.243000

Property seems to be changing between method calls, but no code is supposed to be changing it

28 views Asked by heltonbiker At 19 September 2016 at 19:46

score 243 · Answer 16 · 2016-07-16T09:12:48.893000

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243 views Asked by user2054927 At 16 July 2016 at 09:12

score 804 · Answer 17 · 2016-07-09T09:32:47.027000

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score 289 · Answer 18 · 2016-07-06T09:05:39.150000

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289 views Asked by RubenHerman At 06 July 2016 at 09:05

score 2709 · Answer 19 · 2016-04-13T12:14:52.163000

Separate application service for command / query in CQRS implementation in Domain Driven Design?

2.7k views Asked by drizzie At 13 April 2016 at 12:14

score 1018 · Answer 20 · 2016-04-12T16:25:14.740000

Is running a query from a command a violation of Command-Query Separation?

1k views Asked by NightOwl888 At 12 April 2016 at 16:25

TechQA.

List Question

After `x = x.y()`, why did `x` become `None` instead of being modified (possibly causing "AttributeError: 'NoneType' object has no attribute")?

Is there any rule in CQRS which doesn't allow to use a query and a command in the same controller action?

CQS: Who is responsible for data caching and when?

Vertical Slice Architecture - What should go in the Controller, Command/Query, Response, CommandHandler?

In CQ(R)S, is it OK to use a Command as a parameter of a model constructor?

CQRS and unit of work - one command for all the changes, or many commands + a save command?

How to update read model in CQRS pattern on schema change of write model database?

How to generate read data in CQRS from existing write database?

Command Query Separation - Asynchronous Commands that return values

What are the recomendation for developing .net core 2.2 web api for following bulleted points?

Implementation of Event-Sourcing / CQRS approach in api-platform

Single function classes (named as verbs)

CQS and updating an existing entity

Can not implicity convert type Systems.Collection.Generic.List<feedEventViewModel> to Proj.Areas.Management.Models.FeedEventViewModel

Property seems to be changing between method calls, but no code is supposed to be changing it

Confusion about interaction with other domains

CQS pattern with Spring / Hibernate

CQS with out parameter

Separate application service for command / query in CQRS implementation in Domain Driven Design?

Is running a query from a command a violation of Command-Query Separation?

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